EP0039992A2 - Brennkraftmaschinen mit Maschinenklopfsteuerung - Google Patents

Brennkraftmaschinen mit Maschinenklopfsteuerung Download PDF

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Publication number
EP0039992A2
EP0039992A2 EP81301425A EP81301425A EP0039992A2 EP 0039992 A2 EP0039992 A2 EP 0039992A2 EP 81301425 A EP81301425 A EP 81301425A EP 81301425 A EP81301425 A EP 81301425A EP 0039992 A2 EP0039992 A2 EP 0039992A2
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EP
European Patent Office
Prior art keywords
knock
pulses
bursts
durations
engine
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP81301425A
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English (en)
French (fr)
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EP0039992B1 (de
EP0039992A3 (en
Inventor
Mark Billings Kearney
Kenneth David Mowery
Leslie Joseph Pechous
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Motors Liquidation Co
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Motors Liquidation Co
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Publication date
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Publication of EP0039992A2 publication Critical patent/EP0039992A2/de
Publication of EP0039992A3 publication Critical patent/EP0039992A3/en
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Publication of EP0039992B1 publication Critical patent/EP0039992B1/de
Expired legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
    • F02P5/00—Advancing or retarding ignition; Control therefor
    • F02P5/04—Advancing or retarding ignition; Control therefor automatically, as a function of the working conditions of the engine or vehicle or of the atmospheric conditions
    • F02P5/145—Advancing or retarding ignition; Control therefor automatically, as a function of the working conditions of the engine or vehicle or of the atmospheric conditions using electrical means
    • F02P5/15—Digital data processing
    • F02P5/152—Digital data processing dependent on pinking
    • F02P5/1528—Digital data processing dependent on pinking for turbocompressed engine
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
    • F02P5/00—Advancing or retarding ignition; Control therefor
    • F02P5/04—Advancing or retarding ignition; Control therefor automatically, as a function of the working conditions of the engine or vehicle or of the atmospheric conditions
    • F02P5/145—Advancing or retarding ignition; Control therefor automatically, as a function of the working conditions of the engine or vehicle or of the atmospheric conditions using electrical means
    • F02P5/15—Digital data processing
    • F02P5/152—Digital data processing dependent on pinking
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/40—Engine management systems

Definitions

  • This invention rebates to internal combustion engines with engine knock control More specifically, the invention is concerned with spark ignited internal combustion engines of the type including means to sense engine knock and control an engine variable such as spark timing in a closed loop in response to the sensed engine knock to prevent the engine knock intensity from exceeding a predetermined level.
  • Such engines may be equipped with turbo-chargers or provided with higher compression ratios or advanced spark timing for greater power and fuel economy with the assurance that engine operating conditions conducive. to severe knock will not damage the engine or annoy the vehicle operator.
  • Knock is generally sensed in such systems by means of an electromechanical vibration or detonation transducer which is physically attached to an engine component to respond to the knock induced ringing vibrations of the engine.
  • electromechanical vibration or detonation transducer which is physically attached to an engine component to respond to the knock induced ringing vibrations of the engine.
  • modes and characteristic frequencies of these ringing vibrations are determined by the engine structure and there are many other vibration generating events that occur during the operation of such an engine, prior art methods of signal processing based on simple frequency or amplitude discrimination have rarely been successful in providing commercially acceptable knock control for a mass produced, vehicle mounted engine. Only one such system, described in U.S. patent no. 4,111,035, issued to Gene A. West and Glen C.
  • a superior new system for controlling knock using a demodulator and a low pass filter is described in our copending patent application no. based on United States patent application S.N. 149,645. That system uses a low pass filter which approximates the impulse response of a matched filter for the envelope of a typical knock burst and provides an improvement in signal-to-noise ratio by suppressing bursts or pulses not due to knock which are characterized by the characteristic knock carrier frequency of the engine and have amplitudes comparable to knock induced pulses but have a different envelope shape over time.
  • pulses are generated having durations indicative of knock severity, and those pulses are converted into pulses having durations indicative of required correction.
  • means are provided for sensing knock induced vibration bursts in the engine and generating therefrom pulses having durations varying directly with the severity of said knock vibration bursts, and circuitry is effective to extend the duration of each said pulse by a constant added time duration to reduce the ratio between the longest and shortest durations of said pulses.
  • Circuitry is included to shorten the durations of said pulses by a constant time duration in order to improve the signal-to-noise ratio of the knock pulse signal by suppressing said pulses of less than the subtracted time duration, and circuitry which adds a constant time duration to each pulse follows the circuitry which subtracts a constant time duration from each pulse, with the constant time duration which is added being greater than the subtracted time duration.
  • the trailing edge (end transition) of each knock pulse is effectively delayed by the specified constant duration.
  • Figure 1 shows an internal combustion engine 10 having a rotatry crankshaft which drives the rotor 11 of analternating current signal generator 12.
  • Generator 12 is a standard spark timing signal generator of the variable reluctance type disclosed and described in U.S. patent no. 3,254,247 to Folgy, which issued May 31, 1966.
  • Generator 12 also includes a stator 14 and a pickup coil 15 and provides a plurality of equally spaced projections around rotor 11 and stator 14 related to the number of cylinders in engine lO. Relative rotation between rotor 11 and stator 14 at a speed proportional to engine speed produces a pulsating variation in reluctance which induces an alternating voltage signal in coil 15.
  • the alternating voltage signal in coil 15 is applied to pickup and dwell circuitry 16, which generates normal spark timing pulses. These normal spark timing pulses could be applied to a Schmitt trigger 23 to control a switching transistor 20 connected to switch current on and off in the primary 18a of spark coil 18.
  • the flow of current in primary 18a causes electromagnetic energy to build up in spark coil 18; and this energy is released, when transistor 20 cuts off current in primary 18a, in the form of a high voltage spark pulse in coil secondary 18b applied to spark plug 24.
  • a current sensor 19 provides feedback to pickup and dwell circuitry 16 to control the dwell time of current conduction in primary 18a.
  • the system so far described is one well krown in the art and shown in the U.S. patent to Richards et al no. 3,828,672, issued October 1, 1974.
  • spark retard circuitry 22 is inserted between pickup and dwell circuitry 16 and Schmitt trigger 23.
  • Apparatus suitable for use as such circuitry is shown in the U.S. patent to Gene A. West no. 4,106,447, issued August 15, 1978. However, other appropriate spark retard circuits are well known.
  • Engine 10 is provided with a vibration or detonation sensor 27, which is preferably mounted on the intake manifold 26, engine block, not numbered, or some other component of engine 10.
  • Sensor 27 includes a threaded stud which is tightened into a threaded depression within a mounting boss formed at the desired location. Vibration sensor 27 thus vibrates physically with the engine or engine component upon which it is mounted and responds to such vibrations in at least its axial direction and possibly in other modes to generate electrical output voltage corresponding to such vibrations.
  • Sensor 27 may be of the type which includes a permanent magnet to generate magnetic flux, an electric pickup coil and a magnetostrictive element within the coil in the path of the magnetic flux to vary the flux with vibration and thus generate the output voltage across the coil.
  • a vibration sensor is shown in the U.S. patent no. 4,161,665, issued to Charles E. Buck et al on July 17, 1979.
  • sensor 27 could be of the piezoelectric variety in which a piezoelectric element is attached to a portion of the sensor case for flexing therewith and thus generates an electrical output voltage as the sensor is vibrated.
  • the output signal from vibration sensor 27 is provided to knock measuring circuitry 28 in which a knock intensity signal is generated for application to spark retard circuit 22 to control the retard of the spark timing from the normal spark timing.
  • Apparatus for use as knock measuring circuit 28 is shown in block diagram form in Figure 2 and in circuit form in Figure 3.
  • FIG. 2 shows a block diagram of knock measuring circuit 28.
  • the input signal from sensor 27 is supplied to a bandpass amplifier 30, which provides the correct amount of amplification to the signal and further filters out very high and very low noise components such as ignition and/or radio frequency signals.
  • the sharpness of the bandpass, the center frequency of the bandpass and the amount of amplification will depend to some degree upon the characteristics of the engine and sensor used, but such dependence is minimized as much as possible.
  • a typical bandpass amplifier 30 has a Q of 0.5 about a center frequency of 6.2 kilohertz and provides approximately 14 dB gain.
  • bandpass amplifier 30 The output of bandpass amplifier 30 is provided to a demodulator 31 which extracts the envelopes of the vibration bursts from the six to seven kilohertz carrier wave.
  • the output of demodulator-31 is provided to a low pass filter 32 having a half power frequency in the.range of approximately 100 to 200 Hertz. This filter significantly improves the signal-to-noise ratio of the knock signal.
  • a good example of such a filter is a four pole low pass filter having a half power frequency of substantially 131-160 Hertz.
  • the output signal from low pass filter 32 is supplied to a noise channel 33, which generates a unidirectional voltage signal that generally follows the average voltage of the output of low pass filter 32.
  • the relative levels of the outputs of low pass filter 32 and noise channel 33 are adjusted by suitable amplifier and voltage divider means so that the noise reference signal is maintained at a level below the peaks of the knock induced pulses in the output of low pass filter 32 but above most of the rest of said signal.
  • Waveform 34a of Figure 4 shows a typical output over time of comparator 34.
  • the output of comparator 34 assumes a high level in the absence of a strong pulse from low pass filter 32.
  • Pulses from low pass filter 32 which exceed the noise reference level cause the output of comparator 34 to switch to a low level and generate pulses 34b, 34c and 34d as shown in Figure 4.
  • Pulse 34c the narrowest pulse, is typical of a noise produced pulse which, at this point in the apparatus, is less than the predetermined ignore duration.
  • Pulses 34b and 34d, which are longer in duration, are typical of moderate and heavy knock, respectively.
  • comparator 34 is fed back through an inhibit channel 35 to noise channel 33.
  • Inhibit channel 35 is similar in purpose and operation to the low pass filter described in the aforementioned West et al patent 4,111,035. Its effect is to compensate for the high content of knock signal in a noise channel 33 and thus prevent the output of noise channel 33 from going too high in response to strong knock pulses with consequent reduction in knock control capability.
  • the output of comparator 34 may further be provided to an ignore timer 36 which converts the leading edge of each output pulse of comparator 34 to a rising ramp voltage which leads, in further apparatus to be described, to the suppression of all pulses of shorter duration than a first predetermined duration such as two milliseconds and the shortening of all other pulses by the same duration, the short pulses eliminated being mostly due to short duration noise vibrations as described earlier.
  • the output of ignore timer 36 is shown in waveform 36a of Figure 4, which includes pulses 36b, 36c and 36d. Pulse 36c, never rising above the reference voltage line V/2, will be eliminated in the input of the add timer to be described hereinafter. The shortening of each of pulses 36d and 36b increases the ratio of their durations, which has been foundto be undesirable for maintaining uniformity of control for knock of varying intensity.
  • the output of ignore timer 36 is provided to an add timer 37 which delays the end of each pulse by a constant time duration such as three milliseconds without affecting the beginning of each pulse, as seen in waveform 37a of Figure 4 with pulses 37b and 37d.
  • Add timer 37 thus provides a desired ratio between long and short pulses for best control of both light and heavy knock.
  • add timer 37 would be provided directly with the output of comparator 34, although the constant added duration would assume a value which would generally be different from and probably smaller than the three milliseconds of this embodiment.
  • the output of add timer 37 is provided to a fast charge, slow discharge integrator 38, the output of which is a voltage analog of the desired spark retard from the normal spark timing of engine lO.
  • Figure 3 shows a circuit diagram of a preferred embodiment of the system shown in block form in Figure 2.
  • Input terminal 41 is connected through a capacitor 42 and a resistor 43 to the inverting input of an operational amplifier (op amp) 44, the noninverting input of which is connected through a resistor 45 to an electric power source at voltage V/2.
  • the output of op amp 44 is connected in feedback through a parallel resistor 46 and capacitor 47 to the inverting input.
  • These elements comprise bandpass amplifier 30.
  • the output of op amp 44 is connected through a series capacitor 50 and resistor 51 to the inverting input of an op amp 52, the noninverting input of which is connected to the electrical power supply at voltage V/2.
  • the output of op amp 52 is connected in feedback to the inverting input through a diode 53 and is further connected to the base of a PNP bipolar transistor 54 having its emitter connected to the inverting input of op amp 52.
  • Diode 53 is oriented with its anode connected to the output of op amp 52.
  • the collector of transistor 54 is connected through a resistor 55 and a diode 56 to ground, the diode 56 being oriented with its cathode connected to ground.
  • the collector of transistor 54 is further connected through a resistor 58 to the noninverting input of an op amp 59, which input is also connected to ground through a capacitor 60.
  • the output of op amp 59 is connected through series resistors 61 and 62 to junction 57 between resistor 55 and diode 56.
  • Junction 63 between resistors 61 and 62 is connected through a resistor 64 to the inverting input of op amp 59 and also through a capacitor 65 to the collector of transistor 54.
  • the output of op amp 59 is further connected through a series pair of resistors 66 and 67 to. the noninverting input of an op amp 68, which input is further connected to ground through a capacitor 69.
  • the output of op amp 68 is connected through a series pair of resistors 70 and 71 to junction 57; and the junction 72 between resistors 70 and 71 is connected through a resistor 73 to the inverting input of op amp 68 and through a capacitor 74 to the junction 75 of resistors 66 and 67.
  • Elements 58-75 described above comprise the low pass filter 32.
  • the form of the filter in this embodiment is a pair of cascaded two pole Butterworth filters having identical poles.
  • each of the Butterworth filters, as well as that of demodulator 31 and noise channel 33 are referenced to junction 57 at one diode drop above ground so that op amps 59, 68 and 116 will produce a "zero" output for a "zero" input.
  • the filter constructed around op amp 59 takes its feedback from junction 63 so that a voltage gain is provided through the series pair of resistors 61 and 62 to make up for attenuation losses in the filter.
  • the filter constructed around op amp 68 provides a voltage gain similarly through series resistors 70 and 71.
  • the output of op amp 68 is provided through a resistor 82 to the noninverting input of an op amp 116, which input is further connected through a resistor 117 to a voltage source at voltage V.
  • the output of op amp l16 is connected through a resistor 76 and diode 77 to the inverting input.
  • the inverting input of op amp 116 is connected to the cathode of diode 77 and further through a resistor 78 to junction 57.
  • the inverting input of op amp l16 is further connected through a series resistor 79 and capacitor 80 to junction 57 -
  • These elements comprise the noise channel 33, with op amp 116 and diode 77 providing a detecting function and resistor 79 and capacitor 80 comprising a low pass filter with an output from their junction 81.
  • junction 81 is connected to the noninverting input of a comparator 83, the output of which is tied through a resistor 84 to the electric power source at voltage V.
  • the inverting input of comparator 83 is connected to junction 72, so that resistors 70 and 71 control the amplitude of the noise reference level, which is the output of noise channel 33, relative to the amplitude of the knock pulses in the signal from filter 32.
  • Comparator 83 and resistor 84 comprise the comparator 34.
  • comparator 83 The output of comparator 83 is connected through a capacitor 86 and resistor 87 in series to the electrical power source at voltage V, with junction 88 between capacitor 86 and resistor 87 being connected to the anode of a diode 89 having its cathode connected to the power source at voltage V. Junction 88 is further connected to the noninverting input of a comparator 90 having an inverting input connected to the electrical power source at voltage V/2 and an output connected to a junction 91 between resistor 76 and diode 77. Elements 86 through 90 comprise the inhibit channel 35.
  • an input knock signal applied to terminal 41 is amplified and filtered with a broad bandpass characteristic in bandpass amplifier 30, detected in detector 31 and filtered in filter 32.
  • the time average of the output of filter 32 is obtained in noise channel 33 and applied to the noninverting input of comparator 83.
  • the output of filter 32 obtained from junction 72, reduced in amplitude from that obtained at the output of op amp 68 by the voltage divider resistors 70 and 71, is provided to the inverting input of comparator 83.
  • the output of comparator 83 is high and comparator 90 thus has no effect on junction 91 of noise channel 33.
  • Capacitor 86 causes the noninverting input and output of comparator 90 to fall with the output of comparator 83, which reverse biases diode 77 to prevent the noise channel voltage from being greatly increased by the same pulse coming through the knock channel 33.
  • Capacitor 86 begins to charge immediately, however, so that the output of comparator 90 rises to once again forward bias diode 7.7..
  • Diode 89 provides a quick discharge path for capacitor 86 when the output of comparator 83 switches high again.
  • comparator 83 is connected to the inverting input of a comparator 93, the noninverting input of which is connected to the electric power source at voltage V/2.
  • the output of comparator 93 is connected through a resistor 94 to the power source at voltage. V, through a capacitor 95 to ground and directly to the inverting input of a comparator 96, the noninverting input of which is connected to the power source at voltage V/2.
  • Elements 93-95 comprise ignore timer 36.
  • comparator 96 The output of comparator 96 is connected through a resistor 97 to the power source at voltage V, through a capacitor 98 to ground and directly to the inverting input of a comparator 99.
  • Comparator 99 has a noninverting input connected to the power source at voltage V/2 and an output connected through a resistor 100 to the power source at voltage V.
  • Elements 96-100 comprise the add timer 37.
  • a downward swing of the voltage output of comparator 83 causes the output of comparator 93 to attempt to swing high.
  • a time delay caused by the charging of capacitor 95,- characterized by a first time constant, before this voltage, which is applied to the inverting input of comparator 96 can swing up above voltage V/2.
  • the output of comparator 96 swings low immediately and causes the output of comparator 99 to swing high.
  • a delay is introduced by ignore timer 36 to the leading edge of a knock pulse. This is shown in waveform 96a of Figure 4, which includes pulses 96b and 96d having leading edges delayed by two milliseconds from those of pulses 36b and 36d. It should also be observed that pulse 36c has been eliminated.
  • Waveform 96a of Figure 4 shows the conversion of the trailing edge of each pulse not eliminated by comparator 96 to a rising exponential voltage, as seen in pulses 96b and 96d. This voltage crosses reference voltage V/2 three milliseconds after the beginning of the rise and delays the trailing edges of the pulses as seen in waveform 37a.
  • the output of comparator 99 is connected to the base of a bipolar NPN transistor 102 having a grounded emitter and a collector connected through a resistor 103 to the inverting input of an op amp 104.
  • Op amp 104 has a noninverting input connected through a resistor 105 to the electric power source at voltage V/2 and an output connected through a parallel resistor 106 and capacitor 107 back to the inverting input.
  • These elements comprise the integrator 38, with a fast charging path for capacitor 107 during a knock pulse through transistor 102 and resistor 103 and a slower discharge path for capacitor 107 during the absence of a knock pulse through resistor 106.
  • the output of op amp 104 comprises an output terminal 108 for knock measuring circuit 28 with the knock voltage measured in the positive direction relative to V/2.
  • the output of op am p 104 is further connected to the noninverting input of an op amp 110, which has an inverting input connected through a resistor 111 to electric, power source at voltage V/2 and through a resistor 112 to the electric power source at voltage V.
  • the output of op amp 110 is connected back to the inverting input through a capacitor 113 and through a series diode 114 and resistor 115 to the inverting input of op amp 104, the diode oriented with its anode connected to the output of op amp 110.
  • These items comprise the maximum retard clamp 39.
  • op amp 110 In operation, when the output voltage of op amp 104, which is also the knock retard voltage, reaches the reference voltage on the inverting input of op amp 110, op amp 110 turns on and supplies current to the inverting input of op amp 104 through diode 114 and resistor 115. This current passes through transistor 102 and decreases the current drawn from capacitor 107 so that the output of op amp 104 does not increase further. With this method of clamping there is no overcharging of capacitor 107; and the output of op amp 104 is able to begin falling immediately at the end of a knock pulse.
  • a list of parts and component values for use in the embodiment described above follows:
  • resistors 70, 71 and 82 determine the noise channel gain relative to the signal strength for application to the inputs of the comparator 34; resistor 94 determines the time delay of the ignore timer; and resistor 97 determines the time delay of the add timer.
  • resistors 103 and 106 determine the relative charge and discharge rates of the integrator 38, while resistor 105 should be the same as resistor 106.
  • Sample values for a B uick turbocharged V-6 3.8 L engine are: resistor 70 - 787, 1%; resistor 71 - 1.21K, 1%; resistor 82 - 4.53K, 1%; resistor 94 - 432K, 1%; resistor 97 - 232K 1%; resistor 103 - 17K, 5%; resistors 105, 106 - 750K, 5%.
  • the output pulses of comparator 34 could be converted to digital numbers representative of the pulse durations and input to appropriate digital computing apparatus.
  • the subtraction of a constant first predetermined ignore number from each input duration number would be the equivalent of the ignore timer in its broadest sense.
  • the modified duration numbers would then be supplied to a look-up table or used in an equation to determine a fast attack integration rate in a digital integration process or apparatus corresponding to integrator 38.
  • step of adding the second predetermined add time could be merged into the integrator rate computation or performed beforehand by the designers in the calculation of values for the look-up table, which would then be addressed on the basis of the numbers obtained from subtraction of the first predetermined ignore number.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Electrical Control Of Ignition Timing (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
  • Testing Of Engines (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)
EP81301425A 1980-05-14 1981-04-02 Brennkraftmaschinen mit Maschinenklopfsteuerung Expired EP0039992B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US06/149,644 US4276861A (en) 1980-05-14 1980-05-14 Engine knock control with knock pulse duration adjustment
US149644 1980-05-14

Publications (3)

Publication Number Publication Date
EP0039992A2 true EP0039992A2 (de) 1981-11-18
EP0039992A3 EP0039992A3 (en) 1982-05-12
EP0039992B1 EP0039992B1 (de) 1984-07-04

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Application Number Title Priority Date Filing Date
EP81301425A Expired EP0039992B1 (de) 1980-05-14 1981-04-02 Brennkraftmaschinen mit Maschinenklopfsteuerung

Country Status (6)

Country Link
US (1) US4276861A (de)
EP (1) EP0039992B1 (de)
JP (1) JPS578353A (de)
AU (1) AU539437B2 (de)
CA (1) CA1158297A (de)
DE (1) DE3164525D1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0039993A2 (de) * 1980-05-14 1981-11-18 General Motors Corporation Brennkraftmaschinen mit Klopfsteuerung
FR2545536A1 (de) * 1983-05-04 1984-11-09 Hitachi Ltd

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56110563A (en) * 1980-02-01 1981-09-01 Toyota Motor Corp Ignition time controlling device of engine
JPS56115855A (en) * 1980-02-19 1981-09-11 Toyota Motor Corp Method and apparatus for controlling ignition timing of engine
JPS6046269B2 (ja) * 1980-04-23 1985-10-15 三菱電機株式会社 内燃機関の点火時期制御装置
DE3020853A1 (de) * 1980-06-02 1981-12-10 Robert Bosch Gmbh, 7000 Stuttgart Verfahren zur erkennung des klopfens einer brennkraftmaschine und vorrichtung zur durchfuehrung des verfahrens
JPS5726673U (de) * 1980-07-22 1982-02-12
DE3031511A1 (de) * 1980-08-21 1982-04-01 Robert Bosch Gmbh, 7000 Stuttgart Verfahren zur erkennung des klopfens einer brennkraftmaschine und vorrichtung zur durchfuehrung des verfahrens
JPS5965226A (ja) * 1982-10-05 1984-04-13 Toyota Motor Corp 内燃機関のノツキング検出装置
US4586474A (en) * 1983-06-03 1986-05-06 Mitsubishi Denki Kabushiki Kaisha Knock suppression apparatus for internal combustion engine
US4633835A (en) * 1983-06-03 1987-01-06 Mitsubishi Denki Kabushiki Kaisha Ignition timing control apparatus for engine
FR2550825B1 (de) * 1983-08-17 1990-03-09 Mitsubishi Electric Corp
US4651698A (en) * 1986-04-14 1987-03-24 General Motors Corporation Adaptive knock control with pulse duration discrimination control
US4846130A (en) * 1988-07-05 1989-07-11 General Motors Corporation Engine ignition timing with knock control by combustion pressure harmonic amplitude ratio
US5343843A (en) * 1993-05-24 1994-09-06 Delco Electronics Corporation Knock control for high speed engine including a knock burst envelope follower
US5560337A (en) * 1993-08-16 1996-10-01 Saturn Corporation Knock control using fuzzy logic

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4111035A (en) * 1977-11-07 1978-09-05 General Motors Corporation Engine knock signal generating apparatus with noise channel inhibiting feedback
FR2398895A1 (fr) * 1977-07-26 1979-02-23 Exxon Research Engineering Co Procede et appareil de commande automatique du point d'allumage d'un moteur a combustion interne
JPS54151732A (en) * 1978-05-19 1979-11-29 Toyota Motor Corp Method of controlling ignition timing
FR2466616A3 (fr) * 1979-10-03 1981-04-10 Ducellier & Cie Dispositif de detection du cliquetis d'un moteur a combustion interne, notamment pour vehicule automobile
DE2948856A1 (de) * 1979-12-05 1981-06-11 Daimler-Benz Ag, 7000 Stuttgart Vorrichtung zum erkennen unerwuenschter verbrennungsverlaeufe bei fremdgezuendeten brennkraftmaschinen

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1529364A (en) * 1974-10-17 1978-10-18 Nissan Motor Ignition timing apparatus for an internal combustion engine
US4002155A (en) * 1976-01-12 1977-01-11 General Motors Corporation Engine and engine spark timing control with knock limiting etc.
US4063538A (en) * 1976-02-12 1977-12-20 The Board Of Trustees Of Leland Stanford Junior University Ignition timing control method and apparatus
JPS6047476B2 (ja) * 1978-03-02 1985-10-22 トヨタ自動車株式会社 内燃機関用点火時期制御装置

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2398895A1 (fr) * 1977-07-26 1979-02-23 Exxon Research Engineering Co Procede et appareil de commande automatique du point d'allumage d'un moteur a combustion interne
US4153020A (en) * 1977-07-26 1979-05-08 The United States Of America As Represented By The Administrator Of The United States Environmental Protection Agency Method and apparatus for spark control of engine knock
US4111035A (en) * 1977-11-07 1978-09-05 General Motors Corporation Engine knock signal generating apparatus with noise channel inhibiting feedback
JPS54151732A (en) * 1978-05-19 1979-11-29 Toyota Motor Corp Method of controlling ignition timing
US4257364A (en) * 1978-05-19 1981-03-24 Toyota Jidosha Kogyo Kabushiki Kaisha Method and system for controlling ignition timing
FR2466616A3 (fr) * 1979-10-03 1981-04-10 Ducellier & Cie Dispositif de detection du cliquetis d'un moteur a combustion interne, notamment pour vehicule automobile
EP0027399A1 (de) * 1979-10-03 1981-04-22 DUCELLIER & Cie Vorrichtung zum Aufspüren des Klopfens einer Brennkraftmaschine, insbesondere für Kraftfahrzeug
DE2948856A1 (de) * 1979-12-05 1981-06-11 Daimler-Benz Ag, 7000 Stuttgart Vorrichtung zum erkennen unerwuenschter verbrennungsverlaeufe bei fremdgezuendeten brennkraftmaschinen
FR2471478A2 (fr) * 1979-12-05 1981-06-19 Daimler Benz Ag Dispositif en vue de la reconnaissance d'allures indesirables de combustion dans les moteurs a combustion interne a allumage exterieur
GB2065226A (en) * 1979-12-05 1981-06-24 Daimler Benz Ag Apparatus for detecting knocking in internal combustion engines

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0039993A2 (de) * 1980-05-14 1981-11-18 General Motors Corporation Brennkraftmaschinen mit Klopfsteuerung
EP0039993B1 (de) * 1980-05-14 1984-12-19 General Motors Corporation Brennkraftmaschinen mit Klopfsteuerung
FR2545536A1 (de) * 1983-05-04 1984-11-09 Hitachi Ltd
GB2141781A (en) * 1983-05-04 1985-01-03 Hitachi Ltd Knock control apparatus for internal combustion engine

Also Published As

Publication number Publication date
EP0039992B1 (de) 1984-07-04
AU6930781A (en) 1982-09-16
JPS578353A (en) 1982-01-16
EP0039992A3 (en) 1982-05-12
DE3164525D1 (en) 1984-08-09
US4276861A (en) 1981-07-07
CA1158297A (en) 1983-12-06
AU539437B2 (en) 1984-09-27

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